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Circle number 133 A-1 on Readers' Service Card, page 129 A
No. 5
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Zehrung Solves Shellac Processing Problem With SWECO Separator
ADVANCES IN CHEMISTRY SERIES
F a c e d with t h e p r o b l e m of removing insoluble foreign m a t e r i a l from c r u d e shellac w i t h o u t also removing v a l u a b l e n a t u r a l wax, t h e Z e h r u n g C h e m i c a l C o m p a n y of P o r t l a n d , Ore. installed a n 18" S W E C O S e p a r a t o r . T h e u n i t screens 10 to 15 gallons of c r u d e shellac p e r m i n u t e . Insoluble foreign m a t t e r is rejected continu ously a t a consistency of a b o u t 7 5 % solids, with only l ' / 2 % of solution c a r r i e d o u t w i t h reject solids. T h e p o r t a b l e S W E C O V i b r a t i n g S c r e e n S e p a r a t o r is u s e d w h e r e necessary in t h e Z e h r u n g p l a n t .
Progress in Petroleum Technology
Kwal Reduces Screening Time, Saves 84 per Gallon With SWECO Separator
Fluid Hydroforming . . . . Synthesis of Liquid Fuels from Natural Gas . . . . Isomerization . . . . Aliphatic Chemicals . . . . Synthetic Detergents from Petroleum . . . . Elastomers and Plastics . . . . Composition of Petroleum . . . . A n d 24 O t h e r Topics.
393 pages . . . . cloth bound
A 48" diameter SWECO Vibrating Screen Separator, used to remove s o d i u m chloride c r y s t a l s from a glyc e r i n e recovery s y s t e m in t h e s o a p i n d u s t r y , h a s proved 98.5% effective. T h e initial cost of t h e u n i t is only onet e n t h t h a t of a c o m p a r a b l e centrifuge. I n a d d i t i o n , t h e SWECO unit's much broader operating range permits u s e of a m o r e flexible control system. I n r e p o r t i n g on t h i s efficient, economical process in S O A P A N D C H E M I C A L S P E C I A L T I E S , H. M. M u i r p o i n t s o u t t h a t t h e v i b r a t i n g screen s e p a r a t o r can operate straight through to an 8 0 % crude glycerine p r o d u c t . Centrifuge meth ods now in use s t o p a t 6 0 % , so t h a t all t h e accum ulated salt from t h e 60-80% glyc erine evaporation m u s t be r e h a n dled in t h e next Cutaway drawing of SWECO Vibrat e v a p o r a t i o n cycle. ing Screen Separator. Muir reports that t h e process is s u p e r i o r t o older centrifuge a n d "salte x t r a c t o r " m e t h o d s , with t h e a d d e d a d v a n t a g e s of low u p k e e p a n d long screen life.
T o p r o d u c e high-quality p a i n t for s p r a y i n g on ma s o n r y surfaces, t h e K w a l P a i n t C o m p a n y of D e n v e r m u s t carefully control t h e size of t h e c o n t a i n e d aggre gate particles. K w a l installed a n 18" d i a m e t e r S W E C O V i b r a t i n g S c r e e n S e p a r a t o r . T h i s p o r t a b l e u n i t screens a b a t c h of 115 gallons in less t h a n a n h o u r . Elimina tion of four h o u r s of h a n d screening is equivalent to saving 8 cents a gallon of p a i n t . A complete data file on screening chemical products plus a 2 2 - p a g e catalog are yours for the asking. Write for Bulletin S - 1 0 4 - 1 0 .
$4.00
SWECO A merican Chemical Society 1155 Sixteenth St., N . W .
Washington 6, D. C.
SEPARATORS
SOUTHWESTERN ENGINEERING COMPANY 4800 Santa Fe Ave., Los Angeles 58 LUdlow 3-6262— Cable: SWECOLA
Engineers and Constructors ...
Manufacturers
Circle number 133 A-2 on Readers' Service Card, page 129 A VOL. 49, NO. 4
·
APRIL 1957
1 33 A
